diff options
author | David Howells <dhowells@redhat.com> | 2013-09-24 09:35:16 (GMT) |
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committer | David Howells <dhowells@redhat.com> | 2013-09-24 09:35:16 (GMT) |
commit | ccc3e6d9c9aea07a0b60b2b0bfc5b05a704b66d5 (patch) | |
tree | d111175934b1454fa275fe056f8c6d320e504b01 /security/keys | |
parent | d0a059cac6523b23ad7d743dec8783705aab1668 (diff) | |
download | linux-fsl-qoriq-ccc3e6d9c9aea07a0b60b2b0bfc5b05a704b66d5.tar.xz |
KEYS: Define a __key_get() wrapper to use rather than atomic_inc()
Define a __key_get() wrapper to use rather than atomic_inc() on the key usage
count as this makes it easier to hook in refcount error debugging.
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'security/keys')
-rw-r--r-- | security/keys/key.c | 2 | ||||
-rw-r--r-- | security/keys/keyring.c | 6 | ||||
-rw-r--r-- | security/keys/process_keys.c | 16 |
3 files changed, 12 insertions, 12 deletions
diff --git a/security/keys/key.c b/security/keys/key.c index 7e6bc39..1e23cc2 100644 --- a/security/keys/key.c +++ b/security/keys/key.c @@ -644,7 +644,7 @@ found: /* this races with key_put(), but that doesn't matter since key_put() * doesn't actually change the key */ - atomic_inc(&key->usage); + __key_get(key); error: spin_unlock(&key_serial_lock); diff --git a/security/keys/keyring.c b/security/keys/keyring.c index b42f2d4..87eff32 100644 --- a/security/keys/keyring.c +++ b/security/keys/keyring.c @@ -479,7 +479,7 @@ not_this_keyring: /* we found a viable match */ found: - atomic_inc(&key->usage); + __key_get(key); key->last_used_at = ctx->now.tv_sec; keyring->last_used_at = ctx->now.tv_sec; while (sp > 0) @@ -573,7 +573,7 @@ key_ref_t __keyring_search_one(key_ref_t keyring_ref, return ERR_PTR(-ENOKEY); found: - atomic_inc(&key->usage); + __key_get(key); keyring->last_used_at = key->last_used_at = current_kernel_time().tv_sec; rcu_read_unlock(); @@ -909,7 +909,7 @@ void __key_link(struct key *keyring, struct key *key, klist = rcu_dereference_locked_keyring(keyring); - atomic_inc(&key->usage); + __key_get(key); keyring->last_used_at = key->last_used_at = current_kernel_time().tv_sec; diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c index e68a3e0..68548ea 100644 --- a/security/keys/process_keys.c +++ b/security/keys/process_keys.c @@ -235,7 +235,7 @@ int install_session_keyring_to_cred(struct cred *cred, struct key *keyring) if (IS_ERR(keyring)) return PTR_ERR(keyring); } else { - atomic_inc(&keyring->usage); + __key_get(keyring); } /* install the keyring */ @@ -544,7 +544,7 @@ try_again: } key = ctx.cred->thread_keyring; - atomic_inc(&key->usage); + __key_get(key); key_ref = make_key_ref(key, 1); break; @@ -562,7 +562,7 @@ try_again: } key = ctx.cred->process_keyring; - atomic_inc(&key->usage); + __key_get(key); key_ref = make_key_ref(key, 1); break; @@ -593,7 +593,7 @@ try_again: rcu_read_lock(); key = rcu_dereference(ctx.cred->session_keyring); - atomic_inc(&key->usage); + __key_get(key); rcu_read_unlock(); key_ref = make_key_ref(key, 1); break; @@ -606,7 +606,7 @@ try_again: } key = ctx.cred->user->uid_keyring; - atomic_inc(&key->usage); + __key_get(key); key_ref = make_key_ref(key, 1); break; @@ -618,7 +618,7 @@ try_again: } key = ctx.cred->user->session_keyring; - atomic_inc(&key->usage); + __key_get(key); key_ref = make_key_ref(key, 1); break; @@ -632,7 +632,7 @@ try_again: if (!key) goto error; - atomic_inc(&key->usage); + __key_get(key); key_ref = make_key_ref(key, 1); break; @@ -648,7 +648,7 @@ try_again: } else { rka = ctx.cred->request_key_auth->payload.data; key = rka->dest_keyring; - atomic_inc(&key->usage); + __key_get(key); } up_read(&ctx.cred->request_key_auth->sem); if (!key) |